The wheel of a car completes 1200 rotations per min. On pressing the accelerator of the car 4500 rotations per min is executed by wheel after 10s. Find the angular acceleration and angular displacement in 10s. Also how many rotations are executed in this time?

You throw a baseball directly upward at time t = 0 at an initial speed of 12.3 m/s. what is the maximum height the ball reaches above where it leaves your hand? at what times does the ball pass through half the maximum height? ignore air resistance and take g = 9.80 m/s2.

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.